Consider the following statements (with $a, b, p > 0,\, a \neq 1,\, b \neq 1$): Which combination is correct?

1. $\log_a P = \log_b P \times \log_a b$
2. $\log_a 1 = 0$ and $\log_a a = 1$
3. $x^{\log y} = y^{\log x}$

• ai and ii
• bii and iii
• ci and iii
• di, ii and iii